Below is a map of the total snowfall for the long duration storm of December 8th through December 11th. IMPORTANT NOTE: These totals do NOT represent what was left on the ground after the storm, since a lot of melting and settling occurred during the long time (about 60 hours!) involved in the course of this storm. For instance, the Grand Rapids National Weather Service office had nearly 16 inches storm total, but maximum snow depth was only around 10 inches by the time the storm ended.
Snow developed across the area from south to north during the evening hours on Tuesday night, December 8th. Snow then changed over to a mixture of sleet and rain during the late evening hours on the 8th, and the early morning hours on the 9th south of a line from Muskegon to Alma. Lesser amounts of snow fell south of that line. North of that line, precipitation remained snow longer, and snow accumulated more, with over a foot across parts of Mason and Osceola Counties.
After a lull in the storm on Wednesday morning, snow redeveloped Wednesday afternoon and re-intensified as the lake effect snow began. High winds and lake effect snow continued all day Thursday and into Friday morning. Around a foot of lake effect snow fell across areas from Grand Rapids to Kalamazoo.
By Friday morning, total storm snow amounts, covering the period from Tuesday evening into Friday morning, were over a foot across large sections of Western lower Michigan. Oshtemo in Kalamazoo County had 18 inches of snow from this storm and several other places had around 15 inches. The high winds during the storm made measuring snow very difficult, especially near Lake Michigan. The National Weather Service would like to thank everyone that sent in snow reports during this storm!